<header class="navbar navbar-fixed-top navbar-inverse"> 
<div class="container">
<%= link_to "sample app", root_path, id: "logo" %> <nav>
<ul class="nav navbar-nav navbar-right"> 
<li><%= link_to "Home", root_path %></li>
<li><%= link_to "Help", help_path %></li>
<li><%= link_to "Log in", '#' %></li>
</ul> 
</nav>
</div>
</header>